:root {
  color-scheme: light;
  --color-text: #172033;
  --color-muted: #52606d;
  --color-subtle: #66717e;
  --color-page: #f4f6f8;
  --color-panel: #fff;
  --color-border: #dce1e7;
  --color-primary: #174ea6;
  --color-danger: #a12828;
  --color-success: #14532d;
  --color-error: #8b1a1a;
  --color-focus: #174ea6;
  --color-error-bg: #fdeaea;
  --color-success-bg: #e9f7ee;
  --color-info-bg: #eaf2ff;
  --color-warning: #7a3e00;
  --color-warning-bg: #fff4e5;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--color-text);
  background: var(--color-page);
  line-height: 1.6;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; color: var(--color-text); background: var(--color-page); }
a { color: var(--color-primary); text-underline-offset: 0.16em; overflow-wrap: anywhere; }
img, svg, video { max-width: 100%; height: auto; }

:where(a, button, input, textarea, select, summary):focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: -4rem;
  left: 1rem;
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--color-primary);
  border-radius: 0.4rem;
  font-weight: 700;
}
.skip-link:focus { top: 1rem; }

.site-header {
  min-height: 4rem;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--color-panel);
  border-bottom: 1px solid var(--color-border);
}
.brand { color: var(--color-text); font-weight: 700; text-decoration: none; }
.site-header form { margin: 0; }
.main-nav { min-width: 0; display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--space-3); }
.nav-group { min-width: 0; display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-3); }
.nav-group-label { color: var(--color-subtle); font-size: 0.82rem; font-weight: 700; }
.nav-group-links { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-3); }
.main-nav a { min-height: 2.75rem; display: inline-flex; align-items: center; color: var(--color-muted); text-decoration: none; }
.main-nav a.active, .main-nav a[aria-current="page"] { color: var(--color-primary); font-weight: 700; }
.main-nav .secondary-link { color: var(--color-subtle); font-size: 0.92rem; }
.logout-form { margin-left: auto; }

.page { width: min(66rem, calc(100% - 2rem)); margin: var(--space-12) auto; display: grid; gap: 1.25rem; min-width: 0; }
.public-page { margin-top: clamp(2rem, 6vw, 3rem); }
.narrow, .form-page { width: min(38rem, calc(100% - 2rem)); }
.panel { min-width: 0; padding: clamp(1.25rem, 4vw, 2.25rem); background: var(--color-panel); border: 1px solid var(--color-border); border-radius: 0.8rem; }
.hero h1, .panel h1 { margin-top: 0.25rem; line-height: 1.2; }
.eyebrow { margin: 0; color: var(--color-muted); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.page-heading, .section-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-4); min-width: 0; }
.page-heading h1 { margin: 0.2rem 0; }
.heading-actions, .form-actions, .inline-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); }
.heading-actions form, .inline-actions form { display: inline; }
.section-heading h2 { margin: 0; }

form { display: grid; gap: var(--space-3); min-width: 0; }
label { font-weight: 650; }
input, textarea, select { width: 100%; min-height: 2.75rem; padding: 0.7rem 0.75rem; border: 1px solid #aeb7c2; border-radius: 0.4rem; font: inherit; color: var(--color-text); background: var(--color-panel); }
textarea { resize: vertical; }
input[type="checkbox"] { width: 1.15rem; height: 1.15rem; min-height: 0; padding: 0; accent-color: var(--color-primary); }
input[aria-invalid="true"], textarea[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--color-danger); }
button { width: fit-content; min-height: 2.75rem; padding: 0.6rem 1rem; border: 0; border-radius: 0.4rem; color: #fff; background: var(--color-primary); font: inherit; font-weight: 700; cursor: pointer; }
button.secondary { color: var(--color-text); background: #e9edf2; }
button.danger, .button-link.danger { background: var(--color-danger); }
.button-link { display: inline-flex; align-items: center; min-height: 2.75rem; width: fit-content; padding: 0.6rem 1rem; border-radius: 0.4rem; color: #fff; background: var(--color-primary); text-decoration: none; font-weight: 700; }
.button-link.secondary { color: var(--color-text); background: #e9edf2; }
.button-link.danger { color: #fff; }
.link-button { min-height: 2.75rem; padding: 0; color: var(--color-primary); background: transparent; font-size: 0.9rem; font-weight: 400; }

.notice { padding: 0.75rem; border-radius: 0.4rem; border: 1px solid transparent; }
.notice.error { color: var(--color-error); background: var(--color-error-bg); border-color: #e8b9b9; }
.notice.success { color: var(--color-success); background: var(--color-success-bg); border-color: #b9dec7; }
.notice.info { color: var(--color-primary); background: var(--color-info-bg); border-color: #b9cff5; }
.notice.warning { color: var(--color-warning); background: var(--color-warning-bg); border-color: #edcf9e; }
.error-summary { scroll-margin-top: 1rem; }
.error-summary ul { margin: 0.45rem 0 0; padding-left: 1.25rem; }
.muted, .field-hint { color: var(--color-subtle); }
.field-hint { margin: -0.2rem 0 0.3rem; font-size: 0.9rem; }
.field-error { margin: -0.35rem 0 0.35rem; color: var(--color-danger); font-size: 0.92rem; }

.card-list { display: grid; gap: 0.8rem; }
.compact-list { gap: 0.55rem; }
.content-card { min-width: 0; padding: 1rem 0; border-bottom: 1px solid #edf0f3; overflow-wrap: anywhere; }
.content-card:last-child { border-bottom: 0; }
.content-card h2, .content-card h3 { margin: 0.35rem 0; }
.card-title { font-size: 1.2rem; }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 0.55rem; color: var(--color-subtle); font-size: 0.9rem; }
.badge, .chip { display: inline-block; border-radius: 999px; padding: 0.18rem 0.55rem; background: #e5efff; color: var(--color-primary); font-size: 0.82rem; text-decoration: none; }
.badge.subtle { background: #edf0f3; color: var(--color-muted); }
.chips { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.empty-state { color: var(--color-subtle); padding: 0.7rem 0; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.filter-bar a { min-height: 2.75rem; display: inline-flex; align-items: center; padding: 0.45rem 0.75rem; color: var(--color-muted); border-radius: 0.35rem; text-decoration: none; }
.filter-bar a.selected, .filter-bar a[aria-current="page"] { color: var(--color-primary); background: #e5efff; font-weight: 700; }
.pagination { display: flex; justify-content: center; align-items: center; gap: 1rem; }
.pagination a { font-weight: 650; }
.choice-list { display: grid; gap: 0.45rem; padding: 0.5rem 0; }
.choice { font-weight: 400; overflow-wrap: anywhere; }
fieldset { min-width: 0; margin: 0; padding: 1rem; border: 1px solid var(--color-border); border-radius: 0.5rem; }
legend { padding: 0 0.3rem; font-weight: 650; }
.reference-list, .simple-list, .warning-list, .search-results { margin: 0; padding-left: 1.25rem; }
.reference-list li, .simple-list li { padding: 0.55rem 0; }
.reference-list li { display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid #edf0f3; }
.reference-list.compact li { display: list-item; border: 0; }
.inline-form { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid #edf0f3; }
.inline-form summary { min-height: 2.75rem; display: inline-flex; align-items: center; cursor: pointer; font-weight: 650; }
.danger-text { color: var(--color-danger); }
.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.status-form { display: flex; align-items: end; flex-wrap: wrap; gap: 0.6rem; margin-top: 1rem; }
.status-form label { width: 100%; }
.status-form select { width: auto; min-width: 10rem; }
.timeline { display: grid; gap: 0.8rem; }
.timeline-item { padding: 1rem 0 1.2rem; border-bottom: 1px solid #edf0f3; overflow-wrap: anywhere; }
.timeline-item h3 { margin: 0.4rem 0; }
.table-wrap { max-width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem 0.5rem; border-bottom: 1px solid #edf0f3; text-align: left; }
.count { color: var(--color-subtle); font-size: 0.85em; font-weight: 400; }
.search-results li { padding: 0.7rem 0; overflow-wrap: anywhere; }
.search-results p { margin: 0.25rem 0 0; }
.reading-panel { width: min(100%, 46rem); margin-inline: auto; }
.prose { overflow-wrap: anywhere; }
.prose p, .prose li { line-height: 1.7; }
.prose .lead { font-size: 1.1rem; }
.markdown-body { overflow-wrap: anywhere; }
.markdown-body pre { max-width: 100%; overflow-x: auto; padding: 0.9rem; color: #f4f6f8; background: var(--color-text); border-radius: 0.4rem; }
.markdown-body code { padding: 0.08rem 0.25rem; background: #edf0f3; border-radius: 0.2rem; }
.markdown-body pre code { padding: 0; background: transparent; }
.markdown-body blockquote { margin-left: 0; padding-left: 1rem; border-left: 3px solid var(--color-border); color: var(--color-muted); }
.narrow-panel { max-width: 42rem; }
.error-page { margin-inline: auto; width: min(100%, 42rem); }
.warning-list { color: var(--color-error); }
.back-link { margin: 0; }
.probe-list { padding: 0; list-style: none; }
.probe-list li { padding: 0.75rem 0; display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid #edf0f3; }
.probe-list time { color: var(--color-muted); font-size: 0.9rem; }
footer { padding: 2rem 1rem; color: var(--color-subtle); text-align: center; font-size: 0.85rem; }

@media (max-width: 50rem) {
  .main-nav { order: 3; width: 100%; justify-content: flex-start; }
  .site-header { flex-wrap: wrap; }
}
@media (max-width: 36rem) {
  .probe-list li, .page-heading, .section-heading, .reference-list li { flex-direction: column; gap: 0.2rem; }
  .two-column { grid-template-columns: 1fr; }
  .nav-group { align-items: flex-start; }
}